(A) vacuum
(B) air
(C) water
(D) iron
The answer is: (D) iron
Category: Everyday Science
The chemical formula of aluminium oxide is
(A) Al3O2
(B) Al3O3
(C) Al2O2
(D) Al2O3
The answer is: (D) Al2O3
Enzyme can only function when it attains
(A) Tertiary structure
(B) Quaternary structure
(C) Secondary structure
(D) Primary structure
The answer is: (A) Tertiary structure
Enzyme can only function when it attains Tertiary structure.
Which rays are useful in cancer treatment?
(A) X-rays
(B) Gamma rays
(C) Ultraviolet rays
(D) Radio rays
The answer is: (B) Gamma rays
The only nonmetal element that exists in liquid form is
(A) Bromine
(B) Mercury
(C) Calcium
(D) Platinum
The answer is: (A) Bromine
Which of the following is a vitamin?
(A) Ascorbic acid
(B) Acetic acid
(C) Tartaric acid
(D) None of these
The answer is: (A) Ascorbic acid
Ascorbic acid (Vitamin C) is commonly found in citrus fruits and vegetables. Vitamin C also functions as an antioxidant.
Which radiation has the lowest frequency in the electromagnetic spectrum?
(A) X-rays
(B) Gamma rays
(C) Ultraviolet rays
(D) Radio rays
The answer is: (D) Radio rays
The elements in any one group have similar
(A) atomic number
(B) mass number
(C) properties
(D) radioactivity
The answer is: (C) properties
Air is a very good ________ of heat.
(A) conductor
(B) insulator
(C) radiator
(D) evaporator
The answer is: (B) insulator
Which of the following is the cause of polio?
(A) Infection
(B) Virus
(C) Bacteria
(D) None of these
The answer is: (B) Virus
Polio is caused by virus.